/* ==================== 基础样式 ==================== */
:root {
    --primary-color: #1a5f9e;
    --primary-dark: #124a7c;
    --primary-light: #2d7fc4;
    --secondary-color: #f39c12;
    --text-color: #333;
    --text-light: #666;
    --text-lighter: #999;
    --bg-color: #fff;
    --bg-light: #f8f9fa;
    --bg-dark: #2c3e50;
    --border-color: #e0e0e0;
    --shadow: 0 2px 10px rgba(0,0,0,0.1);
    --shadow-hover: 0 5px 20px rgba(0,0,0,0.15);
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    background-color: var(--bg-color);
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

img {
    max-width: 100%;
    height: auto;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ==================== 按钮样式 ==================== */
.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 4px;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-size: 14px;
}

.btn-primary {
    background-color: var(--primary-color);
    color: #fff;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
}

.btn-outline {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-outline:hover {
    background-color: var(--primary-color);
    color: #fff;
}

.btn-white {
    background-color: #fff;
    color: var(--primary-color);
}

.btn-white:hover {
    background-color: var(--primary-color);
    color: #fff;
}

.btn-lg {
    padding: 15px 40px;
    font-size: 16px;
}

/* ==================== 顶部信息栏 ==================== */
.top-bar {
    background-color: var(--bg-dark);
    color: #fff;
    padding: 10px 0;
    font-size: 13px;
}

.top-bar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top-bar-left span {
    margin-right: 20px;
}

.top-bar-left i {
    margin-right: 5px;
    color: var(--secondary-color);
}

.top-bar-right a {
    color: #fff;
    margin-left: 15px;
    transition: var(--transition);
}

.top-bar-right a:hover {
    color: var(--secondary-color);
}

/* ==================== 导航栏 ==================== */
.header {
    background-color: #fff;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo a {
    display: flex;
    flex-direction: column;
}

.logo h1 {
    font-size: 24px;
    color: var(--primary-color);
    font-weight: 700;
    line-height: 1.2;
}

.logo span {
    font-size: 11px;
    color: var(--text-lighter);
    letter-spacing: 1px;
}

.nav ul {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav a {
    color: var(--text-color);
    font-weight: 500;
    font-size: 15px;
    position: relative;
    padding: 5px 0;
}

.nav a:hover,
.nav a.active {
    color: var(--primary-color);
}

.nav a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--primary-color);
}

/* 下拉菜单 */
.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: #fff;
    box-shadow: var(--shadow-hover);
    border-radius: 4px;
    padding: 10px 0;
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    list-style: none;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li {
    padding: 0;
}

.dropdown-menu a {
    display: block;
    padding: 10px 20px;
    font-size: 14px;
}

.dropdown-menu a:hover {
    background-color: var(--bg-light);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-color);
}

/* ==================== 轮播图 ==================== */
.hero-slider {
    position: relative;
    height: 600px;
    overflow: hidden;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 1s ease;
    display: flex;
    align-items: center;
}

.slide::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
}

.slide.active {
    opacity: 1;
}

.slide-content {
    position: relative;
    z-index: 2;
    color: #fff;
    max-width: 600px;
    padding: 0 20px;
    margin-left: 10%;
}

.slide-content h2 {
    font-size: 48px;
    font-weight: 700;
    margin-bottom: 10px;
    text-transform: uppercase;
}

.slide-content h3 {
    font-size: 24px;
    font-weight: 400;
    margin-bottom: 20px;
    opacity: 0.9;
}

.slide-content p {
    font-size: 18px;
    margin-bottom: 30px;
    opacity: 0.8;
}

.slider-controls {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 3;
}

.prev-slide,
.next-slide {
    background: rgba(255,255,255,0.2);
    border: none;
    color: #fff;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 20px;
    transition: var(--transition);
}

.prev-slide:hover,
.next-slide:hover {
    background: rgba(255,255,255,0.4);
}

.slider-dots {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 3;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255,255,255,0.5);
    cursor: pointer;
    transition: var(--transition);
}

.dot.active {
    background: #fff;
}

/* ==================== 欢迎区域 ==================== */
.welcome-section {
    padding: 80px 0;
    background-color: var(--bg-light);
    text-align: center;
}

.welcome-content h2 {
    font-size: 36px;
    margin-bottom: 20px;
    color: var(--text-color);
}

.welcome-content p {
    font-size: 18px;
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto 30px;
}

.welcome-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
}

/* ==================== 通用区块标题 ==================== */
.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-header h2 {
    font-size: 36px;
    margin-bottom: 15px;
    color: var(--text-color);
}

.section-header p {
    font-size: 16px;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* ==================== 产品展示 ==================== */
.products-section {
    padding: 80px 0;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.product-card {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.product-image {
    position: relative;
    overflow: hidden;
    height: 250px;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.product-card:hover .product-image img {
    transform: scale(1.1);
}

.product-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(26, 95, 158, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.product-card:hover .product-overlay {
    opacity: 1;
}

.product-card h3 {
    padding: 20px 20px 5px;
    font-size: 18px;
}

.product-card p {
    padding: 0 20px 20px;
    color: var(--text-light);
    font-size: 14px;
}

/* ==================== 服务行业 ==================== */
.industries-section {
    padding: 80px 0;
    background-color: var(--bg-light);
}

.industries-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.industry-card {
    background: #fff;
    padding: 40px;
    border-radius: 8px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.industry-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.industry-icon {
    width: 70px;
    height: 70px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.industry-icon i {
    font-size: 28px;
    color: #fff;
}

.industry-card h3 {
    font-size: 20px;
    margin-bottom: 15px;
}

.industry-card p {
    color: var(--text-light);
    margin-bottom: 20px;
}

.read-more {
    color: var(--primary-color);
    font-weight: 500;
}

.read-more:hover {
    color: var(--primary-dark);
}

.read-more i {
    margin-left: 5px;
    transition: var(--transition);
}

.read-more:hover i {
    transform: translateX(5px);
}

.download-brochure {
    text-align: center;
}

/* ==================== 为什么选择我们 ==================== */
.why-choose-section {
    padding: 80px 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    text-align: center;
    padding: 40px;
}

.feature-number {
    font-size: 72px;
    font-weight: 700;
    color: var(--primary-color);
    opacity: 0.2;
    line-height: 1;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 22px;
    margin-bottom: 15px;
}

.feature-card p {
    color: var(--text-light);
}

/* ==================== 关于我们预览 ==================== */
.about-preview-section {
    padding: 80px 0;
    background-color: var(--bg-light);
}

.about-preview-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text h2 {
    font-size: 36px;
    margin-bottom: 20px;
}

.about-text p {
    color: var(--text-light);
    margin-bottom: 30px;
    font-size: 16px;
}

.about-image img {
    border-radius: 8px;
    box-shadow: var(--shadow);
}

/* ==================== 公司简介 ==================== */
.company-intro-section {
    padding: 80px 0;
}

.company-intro-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.company-text h2 {
    font-size: 36px;
    margin-bottom: 20px;
}

.company-text p {
    color: var(--text-light);
    margin-bottom: 30px;
    font-size: 16px;
}

.company-image img {
    border-radius: 8px;
    box-shadow: var(--shadow);
}

/* ==================== 新闻资讯 ==================== */
.news-section {
    padding: 80px 0;
    background-color: var(--bg-light);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.news-card {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.news-image {
    height: 220px;
    overflow: hidden;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.news-card:hover .news-image img {
    transform: scale(1.1);
}

.news-content {
    padding: 25px;
}

.news-date {
    color: var(--text-lighter);
    font-size: 14px;
    display: block;
    margin-bottom: 10px;
}

.news-content h3 {
    font-size: 18px;
    margin-bottom: 10px;
}

.news-content h3 a:hover {
    color: var(--primary-color);
}

.news-content p {
    color: var(--text-light);
    font-size: 14px;
}

/* ==================== 页脚 ==================== */
.footer {
    background-color: var(--bg-dark);
    color: #fff;
    padding: 60px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo h3 {
    font-size: 24px;
    margin-bottom: 5px;
}

.footer-logo span {
    font-size: 12px;
    opacity: 0.7;
    letter-spacing: 1px;
}

.footer-about p {
    margin: 20px 0;
    opacity: 0.8;
    font-size: 14px;
}

.footer-social {
    display: flex;
    gap: 15px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--primary-color);
}

.footer h4 {
    font-size: 18px;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--primary-color);
}

.footer ul {
    list-style: none;
}

.footer li {
    margin-bottom: 10px;
}

.footer a {
    opacity: 0.8;
    font-size: 14px;
}

.footer a:hover {
    opacity: 1;
    color: var(--primary-color);
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 14px;
}

.footer-contact i {
    color: var(--primary-color);
    margin-top: 3px;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 20px 0;
    text-align: center;
    opacity: 0.6;
    font-size: 14px;
}

/* ==================== 页面横幅 ==================== */
.page-banner {
    height: 300px;
    background-size: cover;
    background-position: center;
    position: relative;
    display: flex;
    align-items: center;
}

.page-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.6);
}

.page-banner-content {
    position: relative;
    z-index: 2;
    color: #fff;
    padding: 0 20px;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
}

.page-banner-content h1 {
    font-size: 42px;
    margin-bottom: 15px;
}

.breadcrumb {
    font-size: 14px;
    opacity: 0.8;
}

.breadcrumb a:hover {
    color: var(--secondary-color);
}

.breadcrumb span {
    margin: 0 10px;
}

/* ==================== 关于我们页面 ==================== */
.about-section {
    padding: 80px 0;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-image img {
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.about-content h2 {
    font-size: 36px;
    margin-bottom: 10px;
}

.about-content .subtitle {
    color: var(--primary-color);
    font-size: 18px;
    margin-bottom: 20px;
}

.about-content p {
    color: var(--text-light);
    margin-bottom: 15px;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 30px;
}

.stat-item {
    text-align: center;
    padding: 20px;
    background: var(--bg-light);
    border-radius: 8px;
}

.stat-number {
    display: block;
    font-size: 32px;
    font-weight: 700;
    color: var(--primary-color);
}

.stat-label {
    font-size: 14px;
    color: var(--text-light);
}

/* ==================== 企业文化 ==================== */
.culture-section {
    padding: 80px 0;
    background-color: var(--bg-light);
}

.culture-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.culture-card {
    background: #fff;
    padding: 40px;
    border-radius: 8px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.culture-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.culture-icon {
    width: 80px;
    height: 80px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.culture-icon i {
    font-size: 32px;
    color: #fff;
}

.culture-card h3 {
    font-size: 22px;
    margin-bottom: 15px;
}

.culture-card p {
    color: var(--text-light);
}

/* ==================== 发展历程 ==================== */
.history-section {
    padding: 80px 0;
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background: var(--border-color);
}

.timeline-item {
    display: flex;
    justify-content: flex-end;
    padding-right: 50%;
    position: relative;
    margin-bottom: 50px;
}

.timeline-item:nth-child(even) {
    justify-content: flex-start;
    padding-right: 0;
    padding-left: 50%;
}

.timeline-year {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 60px;
    background: var(--primary-color);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 16px;
}

.timeline-content {
    background: var(--bg-light);
    padding: 25px;
    border-radius: 8px;
    max-width: 350px;
    margin-right: 30px;
}

.timeline-item:nth-child(even) .timeline-content {
    margin-right: 0;
    margin-left: 30px;
}

.timeline-content h3 {
    margin-bottom: 10px;
    color: var(--primary-color);
}

.timeline-content p {
    color: var(--text-light);
    font-size: 14px;
}

/* ==================== 资质荣誉 ==================== */
.certificates-section {
    padding: 80px 0;
    background-color: var(--bg-light);
}

.certificates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.certificate-card {
    background: #fff;
    padding: 40px;
    border-radius: 8px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.certificate-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.certificate-card i {
    font-size: 48px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.certificate-card h3 {
    font-size: 20px;
    margin-bottom: 10px;
}

.certificate-card p {
    color: var(--text-light);
}

/* ==================== 产品分类导航 ==================== */
.product-categories-nav {
    padding: 30px 0;
    background: var(--bg-light);
    border-bottom: 1px solid var(--border-color);
}

.category-tabs {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    justify-content: center;
}

.category-tab {
    padding: 10px 25px;
    border: 2px solid var(--border-color);
    background: #fff;
    border-radius: 30px;
    cursor: pointer;
    transition: var(--transition);
    font-size: 14px;
}

.category-tab:hover,
.category-tab.active {
    background: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
}

/* ==================== 产品列表 ==================== */
.products-list-section {
    padding: 60px 0;
}

.product-category {
    margin-bottom: 60px;
}

.category-title {
    font-size: 28px;
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--primary-color);
    display: inline-block;
}

.products-list-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.product-list-card {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.product-list-card:hover {
    box-shadow: var(--shadow-hover);
}

.product-list-image {
    position: relative;
    overflow: hidden;
}

.product-list-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-tag {
    position: absolute;
    top: 15px;
    left: 15px;
    background: var(--secondary-color);
    color: #fff;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

.product-list-content {
    padding: 30px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.product-category-label {
    color: var(--primary-color);
    font-size: 12px;
    font-weight: 500;
    text-transform: uppercase;
    margin-bottom: 10px;
}

.product-list-content h3 {
    font-size: 20px;
    margin-bottom: 15px;
}

.product-list-content p {
    color: var(--text-light);
    font-size: 14px;
    margin-bottom: 20px;
}

.product-specs {
    list-style: none;
    margin-bottom: 20px;
}

.product-specs li {
    margin-bottom: 8px;
    font-size: 14px;
    color: var(--text-light);
}

.product-specs i {
    color: var(--primary-color);
    margin-right: 8px;
}

/* ==================== 联系信息 ==================== */
.contact-info-section {
    padding: 60px 0;
    background: var(--bg-light);
}

.contact-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.contact-info-card {
    background: #fff;
    padding: 40px;
    border-radius: 8px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.contact-info-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.contact-icon {
    width: 70px;
    height: 70px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.contact-icon i {
    font-size: 28px;
    color: #fff;
}

.contact-info-card h3 {
    font-size: 20px;
    margin-bottom: 15px;
}

.contact-info-card p {
    color: var(--text-light);
    font-size: 14px;
}

/* ==================== 联系表单 ==================== */
.contact-form-section {
    padding: 80px 0;
}

.contact-form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-form-wrapper h2,
.contact-map-wrapper h2 {
    font-size: 28px;
    margin-bottom: 10px;
}

.contact-form-wrapper > p {
    color: var(--text-light);
    margin-bottom: 30px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    margin-bottom: 8px;
    font-weight: 500;
    font-size: 14px;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 14px;
    transition: var(--transition);
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.map-container {
    margin-bottom: 30px;
    border-radius: 8px;
    overflow: hidden;
}

.qr-code h3 {
    font-size: 18px;
    margin-bottom: 15px;
}

.qr-placeholder {
    width: 150px;
    height: 150px;
    background: var(--bg-light);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border: 2px dashed var(--border-color);
}

.qr-placeholder i {
    font-size: 48px;
    color: var(--text-lighter);
    margin-bottom: 10px;
}

.qr-placeholder p {
    color: var(--text-light);
    font-size: 12px;
}

/* ==================== 服务页面 ==================== */
.services-section {
    padding: 80px 0;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.service-card {
    background: #fff;
    padding: 40px;
    border-radius: 8px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.service-icon i {
    font-size: 32px;
    color: #fff;
}

.service-card h3 {
    font-size: 22px;
    margin-bottom: 15px;
}

.service-card p {
    color: var(--text-light);
}

/* ==================== 服务流程 ==================== */
.process-section {
    padding: 80px 0;
    background: var(--bg-light);
}

.process-steps {
    display: flex;
    justify-content: space-between;
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
}

.process-steps::before {
    content: '';
    position: absolute;
    top: 30px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--border-color);
    z-index: 0;
}

.process-step {
    position: relative;
    z-index: 1;
    text-align: center;
    flex: 1;
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--primary-color);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
    margin: 0 auto 20px;
}

.step-content h3 {
    font-size: 18px;
    margin-bottom: 10px;
}

.step-content p {
    color: var(--text-light);
    font-size: 14px;
}

/* ==================== 新闻列表 ==================== */
.news-list-section {
    padding: 80px 0;
}

.news-list-grid {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.news-list-card {
    display: grid;
    grid-template-columns: 300px 1fr;
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.news-list-card:hover {
    box-shadow: var(--shadow-hover);
}

.news-list-image {
    position: relative;
    overflow: hidden;
}

.news-list-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.news-list-card:hover .news-list-image img {
    transform: scale(1.1);
}

.news-tag {
    position: absolute;
    top: 15px;
    left: 15px;
    background: var(--primary-color);
    color: #fff;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 12px;
}

.news-list-content {
    padding: 30px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.news-list-content .news-date {
    color: var(--text-lighter);
    font-size: 14px;
    margin-bottom: 10px;
}

.news-list-content h2 {
    font-size: 22px;
    margin-bottom: 15px;
}

.news-list-content h2 a:hover {
    color: var(--primary-color);
}

.news-list-content p {
    color: var(--text-light);
    margin-bottom: 20px;
}

/* ==================== 分页 ==================== */
.pagination {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 50px;
}

.page-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    background: #fff;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.page-link:hover,
.page-link.active {
    background: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 992px) {
    .about-grid,
    .about-preview-content,
    .company-intro-content,
    .contact-form-grid {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }

    .product-list-card {
        grid-template-columns: 1fr;
    }

    .news-list-card {
        grid-template-columns: 1fr;
    }

    .news-list-image {
        height: 200px;
    }

    .process-steps {
        flex-direction: column;
        gap: 30px;
    }

    .process-steps::before {
        display: none;
    }
}

@media (max-width: 768px) {
    .nav {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: #fff;
        transition: var(--transition);
        overflow-y: auto;
    }

    .nav.active {
        left: 0;
    }

    .nav ul {
        flex-direction: column;
        padding: 20px;
    }

    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        padding-left: 20px;
    }

    .mobile-menu-btn {
        display: block;
    }

    .slide-content h2 {
        font-size: 32px;
    }

    .slide-content h3 {
        font-size: 18px;
    }

    .hero-slider {
        height: 400px;
    }

    .about-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-grid {
        grid-template-columns: 1fr;
    }

    .timeline::before {
        left: 30px;
    }

    .timeline-item,
    .timeline-item:nth-child(even) {
        padding-left: 80px;
        padding-right: 0;
        justify-content: flex-start;
    }

    .timeline-year {
        left: 30px;
        transform: translateX(-50%);
    }

    .timeline-content {
        margin-left: 0;
        margin-right: 0;
    }

    .welcome-buttons {
        flex-direction: column;
        align-items: center;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .top-bar .container {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .slide-content h2 {
        font-size: 24px;
    }

    .section-header h2 {
        font-size: 28px;
    }

    .about-stats {
        grid-template-columns: 1fr;
    }

    .category-tabs {
        flex-direction: column;
        align-items: center;
    }

    .products-list-grid {
        grid-template-columns: 1fr;
    }
}